drivers/bus/dpaa/dpaa_bus.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  *   Copyright 2017-2019 NXP
   4  *
   5  */
   6 /* System headers */
   7 #include <stdio.h>
   8 #include <inttypes.h>
   9 #include <unistd.h>
  10 #include <limits.h>
  11 #include <sched.h>
  12 #include <signal.h>
  13 #include <pthread.h>
  14 #include <sys/types.h>
  15 #include <sys/syscall.h>
  16
  17 #include <rte_byteorder.h>
  18 #include <rte_common.h>
  19 #include <rte_interrupts.h>
  20 #include <rte_log.h>
  21 #include <rte_debug.h>
  22 #include <rte_atomic.h>
  23 #include <rte_branch_prediction.h>
  24 #include <rte_memory.h>
  25 #include <rte_tailq.h>
  26 #include <rte_eal.h>
  27 #include <rte_alarm.h>
  28 #include <rte_ether.h>
  29 #include <rte_ethdev_driver.h>
  30 #include <rte_malloc.h>
  31 #include <rte_ring.h>
  32 #include <rte_bus.h>
  33 #include <rte_mbuf_pool_ops.h>
  34
  35 #include <rte_dpaa_bus.h>
  36 #include <rte_dpaa_logs.h>
  37 #include <dpaax_iova_table.h>
  38
  39 #include <fsl_usd.h>
  40 #include <fsl_qman.h>
  41 #include <fsl_bman.h>
  42 #include <of.h>
  43 #include <netcfg.h>
  44
  45 int dpaa_logtype_bus;
  46 int dpaa_logtype_mempool;
  47 int dpaa_logtype_pmd;
  48 int dpaa_logtype_eventdev;
  49
  50 static struct rte_dpaa_bus rte_dpaa_bus;
  51 struct netcfg_info *dpaa_netcfg;
  52
  53 /* define a variable to hold the portal_key, once created.*/
  54 static pthread_key_t dpaa_portal_key;
  55
  56 unsigned int dpaa_svr_family;
  57
  58 #define FSL_DPAA_BUS_NAME       dpaa_bus
  59
  60 RTE_DEFINE_PER_LCORE(bool, dpaa_io);
  61 RTE_DEFINE_PER_LCORE(struct dpaa_portal_dqrr, held_bufs);
  62
  63 static int
  64 compare_dpaa_devices(struct rte_dpaa_device *dev1,
  65                      struct rte_dpaa_device *dev2)
  66 {
  67         int comp = 0;
  68
  69         /* Segragating ETH from SEC devices */
  70         if (dev1->device_type > dev2->device_type)
  71                 comp = 1;
  72         else if (dev1->device_type < dev2->device_type)
  73                 comp = -1;
  74         else
  75                 comp = 0;
  76
  77         if ((comp != 0) || (dev1->device_type != FSL_DPAA_ETH))
  78                 return comp;
  79
  80         if (dev1->id.fman_id > dev2->id.fman_id) {
  81                 comp = 1;
  82         } else if (dev1->id.fman_id < dev2->id.fman_id) {
  83                 comp = -1;
  84         } else {
  85                 /* FMAN ids match, check for mac_id */
  86                 if (dev1->id.mac_id > dev2->id.mac_id)
  87                         comp = 1;
  88                 else if (dev1->id.mac_id < dev2->id.mac_id)
  89                         comp = -1;
  90                 else
  91                         comp = 0;
  92         }
  93
  94         return comp;
  95 }
  96
  97 static inline void
  98 dpaa_add_to_device_list(struct rte_dpaa_device *newdev)
  99 {
 100         int comp, inserted = 0;
 101         struct rte_dpaa_device *dev = NULL;
 102         struct rte_dpaa_device *tdev = NULL;
 103
 104         TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
 105                 comp = compare_dpaa_devices(newdev, dev);
 106                 if (comp < 0) {
 107                         TAILQ_INSERT_BEFORE(dev, newdev, next);
 108                         inserted = 1;
 109                         break;
 110                 }
 111         }
 112
 113         if (!inserted)
 114                 TAILQ_INSERT_TAIL(&rte_dpaa_bus.device_list, newdev, next);
 115 }
 116
 117 /*
 118  * Reads the SEC device from DTS
 119  * Returns -1 if SEC devices not available, 0 otherwise
 120  */
 121 static inline int
 122 dpaa_sec_available(void)
 123 {
 124         const struct device_node *caam_node;
 125
 126         for_each_compatible_node(caam_node, NULL, "fsl,sec-v4.0") {
 127                 return 0;
 128         }
 129
 130         return -1;
 131 }
 132
 133 static void dpaa_clean_device_list(void);
 134
 135 static struct rte_devargs *
 136 dpaa_devargs_lookup(struct rte_dpaa_device *dev)
 137 {
 138         struct rte_devargs *devargs;
 139         char dev_name[32];
 140
 141         RTE_EAL_DEVARGS_FOREACH("dpaa_bus", devargs) {
 142                 devargs->bus->parse(devargs->name, &dev_name);
 143                 if (strcmp(dev_name, dev->device.name) == 0) {
 144                         DPAA_BUS_INFO("**Devargs matched %s", dev_name);
 145                         return devargs;
 146                 }
 147         }
 148         return NULL;
 149 }
 150
 151 static int
 152 dpaa_create_device_list(void)
 153 {
 154         int i;
 155         int ret;
 156         struct rte_dpaa_device *dev;
 157         struct fm_eth_port_cfg *cfg;
 158         struct fman_if *fman_intf;
 159
 160         /* Creating Ethernet Devices */
 161         for (i = 0; i < dpaa_netcfg->num_ethports; i++) {
 162                 dev = calloc(1, sizeof(struct rte_dpaa_device));
 163                 if (!dev) {
 164                         DPAA_BUS_LOG(ERR, "Failed to allocate ETH devices");
 165                         ret = -ENOMEM;
 166                         goto cleanup;
 167                 }
 168
 169                 dev->device.bus = &rte_dpaa_bus.bus;
 170
 171                 cfg = &dpaa_netcfg->port_cfg[i];
 172                 fman_intf = cfg->fman_if;
 173
 174                 /* Device identifiers */
 175                 dev->id.fman_id = fman_intf->fman_idx + 1;
 176                 dev->id.mac_id = fman_intf->mac_idx;
 177                 dev->device_type = FSL_DPAA_ETH;
 178                 dev->id.dev_id = i;
 179
 180                 /* Create device name */
 181                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
 182                 sprintf(dev->name, "fm%d-mac%d", (fman_intf->fman_idx + 1),
 183                         fman_intf->mac_idx);
 184                 DPAA_BUS_LOG(INFO, "%s netdev added", dev->name);
 185                 dev->device.name = dev->name;
 186                 dev->device.devargs = dpaa_devargs_lookup(dev);
 187
 188                 dpaa_add_to_device_list(dev);
 189         }
 190
 191         rte_dpaa_bus.device_count = i;
 192
 193         /* Unlike case of ETH, RTE_LIBRTE_DPAA_MAX_CRYPTODEV SEC devices are
 194          * constantly created only if "sec" property is found in the device
 195          * tree. Logically there is no limit for number of devices (QI
 196          * interfaces) that can be created.
 197          */
 198
 199         if (dpaa_sec_available()) {
 200                 DPAA_BUS_LOG(INFO, "DPAA SEC devices are not available");
 201                 return 0;
 202         }
 203
 204         /* Creating SEC Devices */
 205         for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
 206                 dev = calloc(1, sizeof(struct rte_dpaa_device));
 207                 if (!dev) {
 208                         DPAA_BUS_LOG(ERR, "Failed to allocate SEC devices");
 209                         ret = -1;
 210                         goto cleanup;
 211                 }
 212
 213                 dev->device_type = FSL_DPAA_CRYPTO;
 214                 dev->id.dev_id = rte_dpaa_bus.device_count + i;
 215
 216                 /* Even though RTE_CRYPTODEV_NAME_MAX_LEN is valid length of
 217                  * crypto PMD, using RTE_ETH_NAME_MAX_LEN as that is the size
 218                  * allocated for dev->name/
 219                  */
 220                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
 221                 sprintf(dev->name, "dpaa-sec%d", i);
 222                 DPAA_BUS_LOG(INFO, "%s cryptodev added", dev->name);
 223                 dev->device.name = dev->name;
 224                 dev->device.devargs = dpaa_devargs_lookup(dev);
 225
 226                 dpaa_add_to_device_list(dev);
 227         }
 228
 229         rte_dpaa_bus.device_count += i;
 230
 231         return 0;
 232
 233 cleanup:
 234         dpaa_clean_device_list();
 235         return ret;
 236 }
 237
 238 static void
 239 dpaa_clean_device_list(void)
 240 {
 241         struct rte_dpaa_device *dev = NULL;
 242         struct rte_dpaa_device *tdev = NULL;
 243
 244         TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
 245                 TAILQ_REMOVE(&rte_dpaa_bus.device_list, dev, next);
 246                 free(dev);
 247                 dev = NULL;
 248         }
 249 }
 250
 251 int rte_dpaa_portal_init(void *arg)
 252 {
 253         pthread_t id;
 254         unsigned int cpu, lcore = rte_lcore_id();
 255         int ret;
 256         struct dpaa_portal *dpaa_io_portal;
 257         rte_cpuset_t cpuset;
 258
 259         BUS_INIT_FUNC_TRACE();
 260
 261         if ((size_t)arg == 1 || lcore == LCORE_ID_ANY)
 262                 lcore = rte_get_master_lcore();
 263         else
 264                 if (lcore >= RTE_MAX_LCORE)
 265                         return -1;
 266
 267         cpu = rte_lcore_to_cpu_id(lcore);
 268
 269         /* Set CPU affinity for this thread.*/
 270         id = pthread_self();
 271         cpuset = rte_lcore_cpuset(lcore);
 272         ret = pthread_setaffinity_np(id, sizeof(cpu_set_t),
 273                                      &cpuset);
 274         if (ret) {
 275                 DPAA_BUS_LOG(ERR, "pthread_setaffinity_np failed on core :%u"
 276                              " (lcore=%u) with ret: %d", cpu, lcore, ret);
 277                 return ret;
 278         }
 279
 280         /* Initialise bman thread portals */
 281         ret = bman_thread_init();
 282         if (ret) {
 283                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on core %u"
 284                              " (lcore=%u) with ret: %d", cpu, lcore, ret);
 285                 return ret;
 286         }
 287
 288         DPAA_BUS_LOG(DEBUG, "BMAN thread initialized - CPU=%d lcore=%d",
 289                      cpu, lcore);
 290
 291         /* Initialise qman thread portals */
 292         ret = qman_thread_init();
 293         if (ret) {
 294                 DPAA_BUS_LOG(ERR, "qman_thread_init failed on core %u"
 295                             " (lcore=%u) with ret: %d", cpu, lcore, ret);
 296                 bman_thread_finish();
 297                 return ret;
 298         }
 299
 300         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized - CPU=%d lcore=%d",
 301                      cpu, lcore);
 302
 303         dpaa_io_portal = rte_malloc(NULL, sizeof(struct dpaa_portal),
 304                                     RTE_CACHE_LINE_SIZE);
 305         if (!dpaa_io_portal) {
 306                 DPAA_BUS_LOG(ERR, "Unable to allocate memory");
 307                 bman_thread_finish();
 308                 qman_thread_finish();
 309                 return -ENOMEM;
 310         }
 311
 312         dpaa_io_portal->qman_idx = qman_get_portal_index();
 313         dpaa_io_portal->bman_idx = bman_get_portal_index();
 314         dpaa_io_portal->tid = syscall(SYS_gettid);
 315
 316         ret = pthread_setspecific(dpaa_portal_key, (void *)dpaa_io_portal);
 317         if (ret) {
 318                 DPAA_BUS_LOG(ERR, "pthread_setspecific failed on core %u"
 319                              " (lcore=%u) with ret: %d", cpu, lcore, ret);
 320                 dpaa_portal_finish(NULL);
 321
 322                 return ret;
 323         }
 324
 325         RTE_PER_LCORE(dpaa_io) = true;
 326
 327         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
 328
 329         return 0;
 330 }
 331
 332 int
 333 rte_dpaa_portal_fq_init(void *arg, struct qman_fq *fq)
 334 {
 335         /* Affine above created portal with channel*/
 336         u32 sdqcr;
 337         struct qman_portal *qp;
 338         int ret;
 339
 340         if (unlikely(!RTE_PER_LCORE(dpaa_io))) {
 341                 ret = rte_dpaa_portal_init(arg);
 342                 if (ret < 0) {
 343                         DPAA_BUS_LOG(ERR, "portal initialization failure");
 344                         return ret;
 345                 }
 346         }
 347
 348         /* Initialise qman specific portals */
 349         qp = fsl_qman_portal_create();
 350         if (!qp) {
 351                 DPAA_BUS_LOG(ERR, "Unable to alloc fq portal");
 352                 return -1;
 353         }
 354         fq->qp = qp;
 355         sdqcr = QM_SDQCR_CHANNELS_POOL_CONV(fq->ch_id);
 356         qman_static_dequeue_add(sdqcr, qp);
 357
 358         return 0;
 359 }
 360
 361 int rte_dpaa_portal_fq_close(struct qman_fq *fq)
 362 {
 363         return fsl_qman_portal_destroy(fq->qp);
 364 }
 365
 366 void
 367 dpaa_portal_finish(void *arg)
 368 {
 369         struct dpaa_portal *dpaa_io_portal = (struct dpaa_portal *)arg;
 370
 371         if (!dpaa_io_portal) {
 372                 DPAA_BUS_LOG(DEBUG, "Portal already cleaned");
 373                 return;
 374         }
 375
 376         bman_thread_finish();
 377         qman_thread_finish();
 378
 379         pthread_setspecific(dpaa_portal_key, NULL);
 380
 381         rte_free(dpaa_io_portal);
 382         dpaa_io_portal = NULL;
 383
 384         RTE_PER_LCORE(dpaa_io) = false;
 385 }
 386
 387 static int
 388 rte_dpaa_bus_parse(const char *name, void *out_name)
 389 {
 390         int i, j;
 391         int max_fman = 2, max_macs = 16;
 392         char *dup_name;
 393         char *sep = NULL;
 394
 395         /* There are two ways of passing device name, with and without
 396          * separator. "dpaa_bus:fm1-mac3" with separator, and "fm1-mac3"
 397          * without separator. Both need to be handled.
 398          * It is also possible that "name=fm1-mac3" is passed along.
 399          */
 400         DPAA_BUS_DEBUG("Parse device name (%s)\n", name);
 401
 402         /* Check for dpaa_bus:fm1-mac3 style */
 403         dup_name = strdup(name);
 404         sep = strchr(dup_name, ':');
 405         if (!sep)
 406                 /* If not, check for name=fm1-mac3 style */
 407                 sep = strchr(dup_name, '=');
 408
 409         if (sep)
 410                 /* jump over the seprator */
 411                 sep = (char *) (sep + 1);
 412         else
 413                 sep = dup_name;
 414
 415         for (i = 0; i < max_fman; i++) {
 416                 for (j = 0; j < max_macs; j++) {
 417                         char fm_name[16];
 418                         snprintf(fm_name, 16, "fm%d-mac%d", i, j);
 419                         if (strcmp(fm_name, sep) == 0) {
 420                                 if (out_name)
 421                                         strcpy(out_name, sep);
 422                                 free(dup_name);
 423                                 return 0;
 424                         }
 425                 }
 426         }
 427
 428         for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
 429                 char sec_name[16];
 430
 431                 snprintf(sec_name, 16, "dpaa-sec%d", i);
 432                 if (strcmp(sec_name, sep) == 0) {
 433                         if (out_name)
 434                                 strcpy(out_name, sep);
 435                         free(dup_name);
 436                         return 0;
 437                 }
 438         }
 439
 440         free(dup_name);
 441         return -EINVAL;
 442 }
 443
 444 #define DPAA_DEV_PATH1 "/sys/devices/platform/soc/soc:fsl,dpaa"
 445 #define DPAA_DEV_PATH2 "/sys/devices/platform/fsl,dpaa"
 446
 447 static int
 448 rte_dpaa_bus_scan(void)
 449 {
 450         int ret;
 451
 452         BUS_INIT_FUNC_TRACE();
 453
 454         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
 455             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
 456                 RTE_LOG(DEBUG, EAL, "DPAA Bus not present. Skipping.\n");
 457                 return 0;
 458         }
 459
 460         if (rte_dpaa_bus.detected)
 461                 return 0;
 462
 463         rte_dpaa_bus.detected = 1;
 464
 465         /* create the key, supplying a function that'll be invoked
 466          * when a portal affined thread will be deleted.
 467          */
 468         ret = pthread_key_create(&dpaa_portal_key, dpaa_portal_finish);
 469         if (ret) {
 470                 DPAA_BUS_LOG(DEBUG, "Unable to create pthread key. (%d)", ret);
 471                 dpaa_clean_device_list();
 472                 return ret;
 473         }
 474
 475         return 0;
 476 }
 477
 478 /* register a dpaa bus based dpaa driver */
 479 void
 480 rte_dpaa_driver_register(struct rte_dpaa_driver *driver)
 481 {
 482         RTE_VERIFY(driver);
 483
 484         BUS_INIT_FUNC_TRACE();
 485
 486         TAILQ_INSERT_TAIL(&rte_dpaa_bus.driver_list, driver, next);
 487         /* Update Bus references */
 488         driver->dpaa_bus = &rte_dpaa_bus;
 489 }
 490
 491 /* un-register a dpaa bus based dpaa driver */
 492 void
 493 rte_dpaa_driver_unregister(struct rte_dpaa_driver *driver)
 494 {
 495         struct rte_dpaa_bus *dpaa_bus;
 496
 497         BUS_INIT_FUNC_TRACE();
 498
 499         dpaa_bus = driver->dpaa_bus;
 500
 501         TAILQ_REMOVE(&dpaa_bus->driver_list, driver, next);
 502         /* Update Bus references */
 503         driver->dpaa_bus = NULL;
 504 }
 505
 506 static int
 507 rte_dpaa_device_match(struct rte_dpaa_driver *drv,
 508                       struct rte_dpaa_device *dev)
 509 {
 510         if (!drv || !dev) {
 511                 DPAA_BUS_DEBUG("Invalid drv or dev received.");
 512                 return -1;
 513         }
 514
 515         if (drv->drv_type == dev->device_type)
 516                 return 0;
 517
 518         return -1;
 519 }
 520
 521 static int
 522 rte_dpaa_bus_dev_build(void)
 523 {
 524         int ret;
 525
 526         /* Load the device-tree driver */
 527         ret = of_init();
 528         if (ret) {
 529                 DPAA_BUS_LOG(ERR, "of_init failed with ret: %d", ret);
 530                 return -1;
 531         }
 532
 533         /* Get the interface configurations from device-tree */
 534         dpaa_netcfg = netcfg_acquire();
 535         if (!dpaa_netcfg) {
 536                 DPAA_BUS_LOG(ERR, "netcfg_acquire failed");
 537                 return -EINVAL;
 538         }
 539
 540         RTE_LOG(NOTICE, EAL, "DPAA Bus Detected\n");
 541
 542         if (!dpaa_netcfg->num_ethports) {
 543                 DPAA_BUS_LOG(INFO, "no network interfaces available");
 544                 /* This is not an error */
 545                 return 0;
 546         }
 547
 548 #ifdef RTE_LIBRTE_DPAA_DEBUG_DRIVER
 549         dump_netcfg(dpaa_netcfg);
 550 #endif
 551
 552         DPAA_BUS_LOG(DEBUG, "Number of ethernet devices = %d",
 553                      dpaa_netcfg->num_ethports);
 554         ret = dpaa_create_device_list();
 555         if (ret) {
 556                 DPAA_BUS_LOG(ERR, "Unable to create device list. (%d)", ret);
 557                 return ret;
 558         }
 559         return 0;
 560 }
 561
 562 static int
 563 rte_dpaa_bus_probe(void)
 564 {
 565         int ret = -1;
 566         struct rte_dpaa_device *dev;
 567         struct rte_dpaa_driver *drv;
 568         FILE *svr_file = NULL;
 569         unsigned int svr_ver;
 570         int probe_all = rte_dpaa_bus.bus.conf.scan_mode != RTE_BUS_SCAN_WHITELIST;
 571         static int process_once;
 572
 573         /* If DPAA bus is not present nothing needs to be done */
 574         if (!rte_dpaa_bus.detected)
 575                 return 0;
 576
 577         /* Device list creation is only done once */
 578         if (!process_once)
 579                 rte_dpaa_bus_dev_build();
 580         process_once = 1;
 581
 582         /* If no device present on DPAA bus nothing needs to be done */
 583         if (TAILQ_EMPTY(&rte_dpaa_bus.device_list))
 584                 return 0;
 585
 586         svr_file = fopen(DPAA_SOC_ID_FILE, "r");
 587         if (svr_file) {
 588                 if (fscanf(svr_file, "svr:%x", &svr_ver) > 0)
 589                         dpaa_svr_family = svr_ver & SVR_MASK;
 590                 fclose(svr_file);
 591         }
 592
 593         /* And initialize the PA->VA translation table */
 594         dpaax_iova_table_populate();
 595
 596         /* For each registered driver, and device, call the driver->probe */
 597         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
 598                 TAILQ_FOREACH(drv, &rte_dpaa_bus.driver_list, next) {
 599                         ret = rte_dpaa_device_match(drv, dev);
 600                         if (ret)
 601                                 continue;
 602
 603                         if (rte_dev_is_probed(&dev->device))
 604                                 continue;
 605
 606                         if (!drv->probe ||
 607                             (dev->device.devargs &&
 608                             dev->device.devargs->policy == RTE_DEV_BLACKLISTED))
 609                                 continue;
 610
 611                         if (probe_all ||
 612                             (dev->device.devargs &&
 613                             dev->device.devargs->policy ==
 614                             RTE_DEV_WHITELISTED)) {
 615                                 ret = drv->probe(drv, dev);
 616                                 if (ret) {
 617                                         DPAA_BUS_ERR("Unable to probe.\n");
 618                                 } else {
 619                                         dev->driver = drv;
 620                                         dev->device.driver = &drv->driver;
 621                                 }
 622                         }
 623                         break;
 624                 }
 625         }
 626
 627         /* Register DPAA mempool ops only if any DPAA device has
 628          * been detected.
 629          */
 630         rte_mbuf_set_platform_mempool_ops(DPAA_MEMPOOL_OPS_NAME);
 631
 632         return 0;
 633 }
 634
 635 static struct rte_device *
 636 rte_dpaa_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
 637                      const void *data)
 638 {
 639         struct rte_dpaa_device *dev;
 640         const struct rte_dpaa_device *dstart;
 641
 642         /* find_device is called with 'data' as an opaque object - just call
 643          * cmp with this and each device object on bus.
 644          */
 645
 646         if (start != NULL) {
 647                 dstart = RTE_DEV_TO_DPAA_CONST(start);
 648                 dev = TAILQ_NEXT(dstart, next);
 649         } else {
 650                 dev = TAILQ_FIRST(&rte_dpaa_bus.device_list);
 651         }
 652
 653         while (dev != NULL) {
 654                 if (cmp(&dev->device, data) == 0) {
 655                         DPAA_BUS_DEBUG("Found dev=(%s)\n", dev->device.name);
 656                         return &dev->device;
 657                 }
 658                 dev = TAILQ_NEXT(dev, next);
 659         }
 660
 661         DPAA_BUS_DEBUG("Unable to find any device\n");
 662         return NULL;
 663 }
 664
 665 /*
 666  * Get iommu class of DPAA2 devices on the bus.
 667  */
 668 static enum rte_iova_mode
 669 rte_dpaa_get_iommu_class(void)
 670 {
 671         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
 672             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
 673                 return RTE_IOVA_DC;
 674         }
 675         return RTE_IOVA_PA;
 676 }
 677
 678 static int
 679 dpaa_bus_plug(struct rte_device *dev __rte_unused)
 680 {
 681         /* No operation is performed while plugging the device */
 682         return 0;
 683 }
 684
 685 static int
 686 dpaa_bus_unplug(struct rte_device *dev __rte_unused)
 687 {
 688         /* No operation is performed while unplugging the device */
 689         return 0;
 690 }
 691
 692 static void *
 693 dpaa_bus_dev_iterate(const void *start, const char *str,
 694                      const struct rte_dev_iterator *it __rte_unused)
 695 {
 696         const struct rte_dpaa_device *dstart;
 697         struct rte_dpaa_device *dev;
 698         char *dup, *dev_name = NULL;
 699
 700         /* Expectation is that device would be name=device_name */
 701         if (strncmp(str, "name=", 5) != 0) {
 702                 DPAA_BUS_DEBUG("Invalid device string (%s)\n", str);
 703                 return NULL;
 704         }
 705
 706         /* Now that name=device_name format is available, split */
 707         dup = strdup(str);
 708         dev_name = dup + strlen("name=");
 709
 710         if (start != NULL) {
 711                 dstart = RTE_DEV_TO_DPAA_CONST(start);
 712                 dev = TAILQ_NEXT(dstart, next);
 713         } else {
 714                 dev = TAILQ_FIRST(&rte_dpaa_bus.device_list);
 715         }
 716
 717         while (dev != NULL) {
 718                 if (strcmp(dev->device.name, dev_name) == 0) {
 719                         free(dup);
 720                         return &dev->device;
 721                 }
 722                 dev = TAILQ_NEXT(dev, next);
 723         }
 724
 725         free(dup);
 726         return NULL;
 727 }
 728
 729 static struct rte_dpaa_bus rte_dpaa_bus = {
 730         .bus = {
 731                 .scan = rte_dpaa_bus_scan,
 732                 .probe = rte_dpaa_bus_probe,
 733                 .parse = rte_dpaa_bus_parse,
 734                 .find_device = rte_dpaa_find_device,
 735                 .get_iommu_class = rte_dpaa_get_iommu_class,
 736                 .plug = dpaa_bus_plug,
 737                 .unplug = dpaa_bus_unplug,
 738                 .dev_iterate = dpaa_bus_dev_iterate,
 739         },
 740         .device_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.device_list),
 741         .driver_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.driver_list),
 742         .device_count = 0,
 743 };
 744
 745 RTE_REGISTER_BUS(FSL_DPAA_BUS_NAME, rte_dpaa_bus.bus);
 746
 747 RTE_INIT(dpaa_init_log)
 748 {
 749         dpaa_logtype_bus = rte_log_register("bus.dpaa");
 750         if (dpaa_logtype_bus >= 0)
 751                 rte_log_set_level(dpaa_logtype_bus, RTE_LOG_NOTICE);
 752
 753         dpaa_logtype_mempool = rte_log_register("mempool.dpaa");
 754         if (dpaa_logtype_mempool >= 0)
 755                 rte_log_set_level(dpaa_logtype_mempool, RTE_LOG_NOTICE);
 756
 757         dpaa_logtype_pmd = rte_log_register("pmd.net.dpaa");
 758         if (dpaa_logtype_pmd >= 0)
 759                 rte_log_set_level(dpaa_logtype_pmd, RTE_LOG_NOTICE);
 760
 761         dpaa_logtype_eventdev = rte_log_register("pmd.event.dpaa");
 762         if (dpaa_logtype_eventdev >= 0)
 763                 rte_log_set_level(dpaa_logtype_eventdev, RTE_LOG_NOTICE);
 764 }